diff --git a/extensions/msteams/src/attachments.test.ts b/extensions/msteams/src/attachments.test.ts
index ad30d82a905..fce817c2aea 100644
--- a/extensions/msteams/src/attachments.test.ts
+++ b/extensions/msteams/src/attachments.test.ts
@@ -208,7 +208,9 @@ const createRedirectResponse = (location: string, status = 302) =>
   new Response(null, { status, headers: { location } });
 
 const createOkFetchMock = (contentType: string, payload = "png") =>
-  vi.fn(async () => createBufferResponse(payload, contentType));
+  vi.fn(async (_input: RequestInfo | URL, _init?: RequestInit) =>
+    createBufferResponse(payload, contentType),
+  );
 const asFetchFn = (fetchFn: unknown): FetchFn => fetchFn as FetchFn;
 
 const buildDownloadParams = (
diff --git a/src/agents/provider-request-config.test.ts b/src/agents/provider-request-config.test.ts
index 977371a07ec..3adae4b5ef4 100644
--- a/src/agents/provider-request-config.test.ts
+++ b/src/agents/provider-request-config.test.ts
@@ -1,4 +1,5 @@
 import { describe, expect, it } from "vitest";
+import type { ConfiguredProviderRequest } from "../config/types.provider-request.js";
 import type { SecretRef } from "../config/types.secrets.js";
 import {
   buildProviderRequestDispatcherPolicy,
@@ -11,7 +12,6 @@ import {
   sanitizeConfiguredProviderRequest,
   sanitizeRuntimeProviderRequestOverrides,
 } from "./provider-request-config.js";
-import type { ProviderRequestTransportOverrides } from "./provider-request-config.js";
 
 describe("provider request config", () => {
   it("merges discovered, provider, and model headers in precedence order", () => {
@@ -360,7 +360,7 @@ describe("provider request config", () => {
     expect(
       sanitizeConfiguredProviderRequest({
         allowPrivateNetwork: true,
-      } as ProviderRequestTransportOverrides),
+      } as ConfiguredProviderRequest),
     ).toBeUndefined();
   });
 
diff --git a/src/cli/exec-policy-cli.test.ts b/src/cli/exec-policy-cli.test.ts
index f6600c9c403..01d1da79366 100644
--- a/src/cli/exec-policy-cli.test.ts
+++ b/src/cli/exec-policy-cli.test.ts
@@ -511,7 +511,7 @@ describe("exec-policy CLI", () => {
   it("does not clobber a newer approvals write during rollback", async () => {
     const originalApprovals = structuredClone(mocks.getApprovals());
     const originalRaw = JSON.stringify(originalApprovals, null, 2);
-    const originalSnapshot: ExecApprovalsSnapshot = {
+    const originalSnapshot = {
       path: "/tmp/exec-approvals.json",
       exists: true,
       raw: originalRaw,